Tradition: Geometric Earthworks.
(c. 200 BC - 500 AD).
Seip enclosure, Ross County. (Squier and Davis
Baum Earthworks, Paint Creek Valley. (Squier and
Davis 1848) .
High Bank Works. Ross County, (Squier and Davis,
Group, North Park Works, Ross County.
Hopeton Earthwork, Ross County, (Squier and Davis,
This recently discovered earthwork was one of
several found in the Amazon, Brazil. It bears a striking
similarity to several of the Hopewell earthworks.
to the American Mound Builders)